<!DOCTYPE html>
<html>
<head>
    <title>File Upload Test</title>
</head>
<body>

<h2>File Upload</h2>
<form method="POST" action="http://localhost:8081/file/upload" enctype="multipart/form-data">
    <input type="file" name="file" required><br><br>
    <button type="submit">Upload</button>
</form>

</body>
</html>